* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: #e4e4e7;
    background: #18181b;
}

header {
    background: #27272a;
    border-bottom: 1px solid #3f3f46;
    padding: 1rem 2rem;
}

nav {
    display: flex;
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

nav a {
    color: #a1a1aa;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

nav a:hover {
    color: #fafafa;
}

main {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.content {
    background: #27272a;
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid #3f3f46;
}

footer {
    text-align: center;
    padding: 2rem;
    color: #71717a;
    margin-top: 4rem;
    border-top: 1px solid #3f3f46;
}

footer a {
    color: #a1a1aa;
    transition: color 0.2s;
}

footer a:hover {
    color: #fafafa;
}

h1 { 
    margin-bottom: 1rem;
    color: #fafafa;
}

h2 { 
    margin: 1.5rem 0 0.5rem;
    color: #fafafa;
}

h3 {
    margin: 1rem 0 0.5rem;
    color: #d4d4d8;
}

p { margin-bottom: 1rem; }

a { 
    color: #60a5fa;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul, ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

li {
    margin-bottom: 0.5rem;
}

code {
    background: #18181b;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
    border: 1px solid #3f3f46;
    word-wrap: break-word;
}

pre {
    background: #18181b;
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: 1rem;
    border: 1px solid #3f3f46;
    max-width: 100%;
}

pre code {
    background: none;
    padding: 0;
    border: none;
    display: block;
    overflow-x: auto;
    white-space: pre;
    word-wrap: normal;
}

.footer-penguin {
    width: 64px;
    height: 64px;
    margin: 0 auto 0.5rem;
    display: block;
    opacity: 0.8;
}